Koyo V2304 Scion 04-06 XA/XB MT Radiator Koyo Radiators are fully polished to a mirror finish Provide 20% to 30% more cooling than standard radiators Handles high revving, high performance motors Perfect for Turbo Charged, Super Charged & Nitros Oxide equipped engines Made from aircraft quality aluminum and Heli-arc welded, cores are NOCOLOK-brazed